#7032 closed defect (duplicate)

defect: mpc8: audible blip at end of some tracks

Reported by: smithjd15 Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug:

Decoding mpc8 files with ffmpeg introduces an audible blip at the end of some files that is not present when decoded with the mpcdec decoder.

How to reproduce:

ffmpeg -i <some-sv8-file>.mpc -format wav <some-sv8-file>.wav

Open the resulting file in a media player or look at the end of the track in an audio editing application to see the visible blip.

Using the samples from https://trac.ffmpeg.org/ticket/6046 (qx.mpc) of a waveform the blip is clearly visible and somewhat audible after converting the samples to .wav files.

ffmpeg version 3.3.4 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 4.8 (SUSE Linux)

Attachments (3)

q1.png (36.9 KB) - added by smithjd15 10 months ago.
End of q1.mpc waveform
q5.png (35.7 KB) - added by smithjd15 10 months ago.
End of q5.mpc waveform
q10.png (37.3 KB) - added by smithjd15 10 months ago.
End of q10.mpc waveform

Download all attachments as: .zip

Change History (4)

Changed 10 months ago by smithjd15

End of q1.mpc waveform

Changed 10 months ago by smithjd15

End of q5.mpc waveform

Changed 10 months ago by smithjd15

End of q10.mpc waveform

comment:1 Changed 10 months ago by cehoyos

  • Component changed from avcodec to undetermined
  • Resolution set to duplicate
  • Status changed from new to closed
  • Version changed from 3.3.6 to unspecified

For future tickets: Please remember to always test current FFmpeg git head and always provide the ffmpeg command line you tested together with the complete, uncut console output for valid tickets.

I suggest we revisit this ticket once #6046 is fixed.

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